Fix object value issue

[marthacryan]

Fixes an issue with object values in the properties editor revealed by elyra-ai/elyra#2942.

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[codecov-commenter]

Codecov Report

Merging #202 (614f281) into main (d392469) will decrease coverage by 0.63%.
The diff coverage is 3.22%.

@@            Coverage Diff             @@
##             main     #202      +/-   ##
==========================================
- Coverage   62.30%   61.66%   -0.64%     
==========================================
  Files          46       46              
  Lines        1682     1701      +19     
  Branches      484      494      +10     
==========================================
+ Hits         1048     1049       +1     
- Misses        504      520      +16     
- Partials      130      132       +2     

Impacted Files	Coverage Δ
...tor/src/CustomFormControls/CustomFieldTemplate.tsx	45.45% <0.00%> (-4.55%)	⬇️
...ne-editor/src/properties-panels/NodeProperties.tsx	38.55% <0.00%> (-0.96%)	⬇️
...es/pipeline-editor/src/PipelineController/index.ts	55.65% <4.00%> (-2.29%)	⬇️

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[ajbozarth]

code-wise I believe this looks ok, but I didn't test it locally yet

[ajbozarth]

this seems like it would result in a class name of true not small-object-field as I would assume is expected

[marthacryan]

No I think actually it will / did work - it's a typescript thing, couldn't find documentation for it but it just saves a line of code